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Eureptilia

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Title: Eureptilia  
Author: World Heritage Encyclopedia
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Subject: Romeriida, Captorhinidae, Sauropsida, Eunotosaurus, Eureptilia
Collection: Pennsylvanian First Appearances, Reptiles
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Eureptilia

Eureptilians
Temporal range:
PennsylvanianPresent, 308–0 Ma
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Labidosaurikos meachami, an early eureptilian of the family Captorhinidae
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Clade: Eureptilia
Olson, 1947
Subgroups

Brouffia
Coelostegus
Thuringothyris
Captorhinidae
Romeriida

Eureptilia ("true reptiles") is one of the two major clades of the Sauropsida, the other being Anapsida (or Parareptilia). Eureptilia includes not only all Diapsids, but also a number of primitive Permo-Carboniferous forms previously classified under the Anapsida, in the old (no longer recognised) order "Cotylosauria".

Primitive eureptilians were all small, superficially lizard-like forms, that probably scurried through the Paleozoic undergrowth in search of insects. The diapsids are the only eureptilian clade to continue beyond the Permian Period. Eureptilia is characterized by the skull having greatly reduced supraoccipital, tabular, and supratemporal bones that are no longer in contact with the postorbital.

Classification

Eureptilia was defined as a stem-based clade, specifically, the most inclusive clade containing Captorhinus aguti and Petrolacosaurus kansensis but not Procolophon trigoniceps, by Tsuji and Müller (2009).[1] The cladogram here was modified after Muller and Reisz (2006):[2]

Reptilia 

Parareptilia

 Eureptilia 

Coelostegus




Thuringothyris


Captorhinidae




Brouffia

 Romeriida 

Paleothyris



Hylonomus



Protorothyrididae


Diapsida








References

  1. ^ Benton, M. J., Donoghue, P. C., Asher, R. J., Friedman, M., Near, T. J., & Vinther, J. (2015). "Constraints on the timescale of animal evolutionary history." Palaeontologia Electronica, 18.1.1FC; 1-106; palaeo-electronica.org/content/fc-1
  2. ^ Muller, J. and Reisz, R.R. (2006). "The phylogeny of early eureptiles: Comparing parsimony and Bayesian approaches in the investigation of a basal fossil clade." Systematic Biology, 55(3):503-511. doi:10.1080/10635150600755396

External links

  • Eureptilia examples of some Permian species
  • Eureptilia
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